diff mbox series

[04/26] xfs: export realtime group geometry via XFS_FSOP_GEOM

Message ID 172437088588.60592.14229821430878166126.stgit@frogsfrogsfrogs (mailing list archive)
State New
Headers show
Series [01/26] xfs: define the format of rt groups | expand

Commit Message

Darrick J. Wong Aug. 23, 2024, 12:22 a.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Export the realtime geometry information so that userspace can query it.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/libxfs/xfs_fs.h |    4 +++-
 fs/xfs/libxfs/xfs_sb.c |    5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

Comments

Christoph Hellwig Aug. 23, 2024, 5:12 a.m. UTC | #1 
Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index b441b9258128e..57819fea064e7 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -186,7 +186,9 @@  struct xfs_fsop_geom {
 	__u32		logsunit;	/* log stripe unit, bytes	*/
 	uint32_t	sick;		/* o: unhealthy fs & rt metadata */
 	uint32_t	checked;	/* o: checked fs & rt metadata	*/
-	__u64		reserved[17];	/* reserved space		*/
+	__u32		rgextents;	/* rt extents in a realtime group */
+	__u32		rgcount;	/* number of realtime groups	*/
+	__u64		reserved[16];	/* reserved space		*/
 };
 
 #define XFS_FSOP_GEOM_SICK_COUNTERS	(1 << 0)  /* summary counters */
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 29b20615d80bb..2a0155d946c1e 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1407,6 +1407,11 @@  xfs_fs_geometry(
 		return;
 
 	geo->version = XFS_FSOP_GEOM_VERSION_V5;
+
+	if (xfs_has_rtgroups(mp)) {
+		geo->rgcount = sbp->sb_rgcount;
+		geo->rgextents = sbp->sb_rgextents;
+	}
 }
 
 /* Read a secondary superblock. */